Upload & Sell: Off
Really what should be happening here is that someone (Schneider, Zeiss, CV, one of us) should put out at least one modern PC (even better with tilt) lens specifically for mirrorless systems. They will be the bulk of the photography market for the foreseeable future, that much is clear already. Hopefully that lens would cover the full 35mm format and be useful for Leica, upcoming Sony ff nex, as well as all the existing aps-c/m43 bodies. It's pretty accepted that these lenses can be mf and manual aperture already and that not be seen as a limitation. Would be painless to share between systems.
I know we can buy any of the ones above and there are adapters for m43 that let you use any nikon lens like a pc lens and probably others (though not M lenses). But it's still a pretty clunky solution. Even the smallest would be much larger than it needs to be, not great for what's intended to be a compact and/or travel system.